There's a handful of Google hits. Seems like a medical version. The E2I box label in your photo appears to be placed over the original E2 printed on the box. Would be interesting to see the bottom label on the camera itself.

My guess is that this (customized?) version is very close to the original E2 body.

Thanks guys...........I came up with the same results you did.I know where there is one for sale at the moment and am interested in purchasing it.I'll let you know how it goes and post better images if I get it.

Here is a full brochure in Japanese. Thanks to Thierry Ravassod (NipponKogakuKlub) for these scans.The E2I is part of the Nikon Eclipse E800 Microscope system.Is there anyone on the forum that can translate to English?

One of our members, Blakehoo, uses these. There really is no difference from the usual models, other than the extension tube for the scope. I had passed my E-series units on to him some time ago because he was still using the series in his biomedical research work.

This is a case of making a system out of the camera and scope, both of which existed as stand-alone products. At work, I use a similar setup with a Nikon trinocular scope and a Nikon video camera module hooked to a dedicated PC. At home, I have an older binocular scope with an adapter that replaces one eyepiece and hooks a Kodak DCS 560 up in place of my eye. So, that one works more like this setup than my more modern version at work. It's cheaper that way!

Thanks for the info Stan.I'll try and get in touch with Blakehoo and see if they can shed any more light on the subject.I ended up purchasing the camera and it is due to arrive shortly.I'm keen to find out if in fact there are any differences between the E2I and previous models.I don't understand why Nikon would have gone to the trouble of creating a whole new model if that model is exactly the same as any previous ones.